Mechanics

BATTERY LIGHT COMES ON ABOVE 2500 RPM

2012 Ford F-250

1998 Ford Ranger 3.0 liter V6 130,000 miles. Battery light blinks on, lights dim and altmeter goes to discharge above 2500 rpm. Battery terminals have a bit of buildup on them, though they were cleaned and painted 6 mos ago. Suspect alternator diode. Any insight
Thanks
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Bhessian
February 1, 2007.



I side with your insight. When yo get an alternater, be wary. I would go top end NAPA or USA brand myself. All alernaters are not equal.